Condenser system and vacuum-pump



P. DISE RENS. CONDENSERSYSTEM 'AND V-ACUU M PUMP.

APPLICATION nun MAY 31, 191's.

' Patented June 29, 1920.

.17 his UNITED STATES PATENT OFFICE.

I PAUL DISEIR-ENS, OF CINCINNATI, OHIO, ASSIGNOR TO WORTHINGTON PUMP AND MACHINERY CORPORATION, A CORPORATION OF VIRGINIA.

CONDENSER SYSTEM AND VACUUM-PUMP.

Specification of Letters Patent: P t t Jun 29, 1-920 Application filed May 31, 1918. Serial No. 237,408.

To all whom it may concern:

Be it known that I, PAUL DISERENS, a citizen of the United States, residing at Cincinnati, county of Hamilton, and State of Ohio, have invented certain new and useful Improvements in Condenser Systems and Vacuum-Pumps, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relatesto improvements in vacuum pumping apparatus, and particularly to an apparatus of this kind for use in connection with condensing systems.

In vacuum pump service, especially when used in connection with a condenser, considerable water collects within the pump cylinder and passages. This water is chiefly from three sources, viz., entrained moisture brought over from the condenser with the air; moisture resulting from the chilling efl'ect of the cold jackets of the vacuum pump; and moisture which is precipitated by the compression of the air to atmospheric pressure for delivery.

The object of the invention is to provide a simple, reliable, and cheap vacuum pump capable of maintaining a high vacuum and in which all water from the above mentioned sources is automatically removed from the pump without requiring the use of special drainage attachments for this purpose.

For a full understanding of the invention a detailed description of a construction embodying the same will now be given in eonnection with the accompanylng drawing,

forming a part of this specification and' illustrating a preferred embodiment of the invention, and the features forming the invention then specifically pointed out in the claims.

in the drawings,

Figure 1 is a side elevation of a condensing plant and vacuumpump embodying the present invention, and

Fig. 2 is a vertical section of the vacuum pump.

mulatin.g on the suction side of the pump mayescape to the condenser. A t 6 is indicated a suitable means for circulating condensing water through the condenser. In the present example this means is shown as a centrifugal pump having its suction at 7 and its discharge to the condenser at 8. The cooling water after passing through the condenser is discharged at 9 At 10 is indicated the exhaust steam inlet to the condenser, and at 11 the air discharge pipe.

The above condenser system is that shown and described in United States Letters Patent No. 1,196,742, to M. Riesner, granted August 29th, 1916, and the present invention has been made in connection with the system of said Riesnerpatent and providesan improved. vacuum pump for use in such systems.

For the purpose of removing the air or uncohdensable gases anduncondensed vapors from the condenser and thereby maintain. ing the necessary vacuum in the condenser, the vacuum pump-of the present invention is provided, with which pipe 11 connects.

This" pump is a. vertical pump, and in the form shown comprises a single vertical cylinder 12, having at its upper end an inlet chamber 13 connected to pipe 11 and provided'with suitable downwardly opening .valves 14;, which may be of any suitable dated October 12, 1915. The piston 15 carried by piston rodlfi is provided with suit able downwardly opening transfer valves 17, controlhng transfer passages 18 through the piston, preferably of the same type, as are the outwardly opening discharge valves 23 at the bottom of the cyl nder. Small clearance is secured above the piston, where 1t 1s most necessary in the pump shown, by

the close contact of the head plate and piston, and, as an aid in securing small clearance space below the piston and clearing the cylinder of liquid, the bottom head of the cylinder 19 is preferably provided with projections, such as the truncated cones 20,

entering the corresponding lower portions:

of the transfer passages below valves 17, and the center portion of the piston enters the coned recess between cones 20, with a charge valves 23 discharge to annular discharge chamber 22 and dischargepipe 24.

The operation of the pump is as follows :On the downward stroke of the pis-' ton 15, air and uncondensed gases and vapors will be withdrawn from the condenser through pipe 11 and downwardly opening inlet valves 14 to theupper por-' tion of the cylinder 12. On the return or upward stroke of the piston 15 this air and vapor will pass through the downwardly opening transfer valves 17 in the piston to the lower portion of the cylinder 12, preferably without substantial compression, and

upon the next suction or downward stroke of the piston the same will be, compressed and forced out through the outwardly open in discharge valves 23.

y means of the apparatus described, a

high vacuum can be obtained in a reliable I and economical lmanner and due to the construction any water brought over from the condenser or condensed in'the pump will flow. through the pump from the, inlet to the discharge by gravity and will be removed from the bottom of the pump with the air and; gases.

In the condenser and vacuum pump syseration and advantages pointed out in the Riesner Patent No.'1,196,7,42, are obtained tems, however, including those in which the and all drainage difliculty avoided. The pumps may be used on other condenser sys;

air and water are taken ofl by a single pump. If the head plate and inlet valves 14 be omitted, the pump will operate as a single stage vacuum pump value under some conditions.

It will be understood that the invention is not to be limited to the specific construction or arrangement of the condenser system or pump shown, as these maybe varied widely without departing from the inven- -tion, as defined by the'claims.

What I claim is: 1. The combination with a. condenser, of a vacuum pump having a" vertical cylinder connected to the condenser at the top of the pump, a transfer passage inthe piston having downwardly opening valves, and discharge valves in the lower part of the cylinder.

and will be of 2. The combination with a condenser, of i a vacuum pump having a vertical cylinder with. its inlet chamber at the top of the pump and connected to the condenser,

downwardly opening inlet valves from theinlet chamber, a transfer passage in the piston having downwardly opening valves, and

discharge valves inthe lower part of the cylinder.

3. The combination with a condenser, of

' a pump having a vertical cylinder with its I inlet at theupper end connected with the piston, and valve mechanism arranged to transfer the fluidfrom the inlet side of the piston to the outlet side thereof without material compression of such fluid.

4. The-combination with a condenser, of

a vacuum pump having a vertical cylinder with its inlet atthe upper end connected with the condenser, a discharge outlet at the lower end of the cylinder, downwardly opening valves between the inlet and upper end. of the cylinder, a transfer passage through the piston having downwardly opening valves arranged to. permit the transfer of fluid through the piston without material compression of the fluid, and discharge valves at the lower end of the cylinder. i

5. A vacuumpump having a vertical cyl inder with its inlet at the upper end, a piston having a passage through it, dow'n-. wardly opening valves controlling'said passage, and discharge valves at the lower end of the cylinder. tem shown and described, the twostage op- 6. A vacuum pump inder with an inlet chamber above'the'cylinder, downwardly opening valves between the inlet chamber and cylinder, a piston having a passage through it, downwardly opening valves controlling said passage,

vand discharggvalves at the lower end of the cylinder.

7. A vacuum pum havingavertical cylinder with an inlet 0 amber above the cylinder, downwardly opening valves between the inlet chamber and cylinder, a piston having a transfer passage through it, down-- I wardly opening transfer valves controlling said passage, said transfer valves being arranged to transfer the fluid through the pis- 'ton without material compression of they fluid, and discharge valves at the lower end of the cylinder.

8. .A vacuum pump having a vertical cyl-' inder with. its inlet at the upper end of the cylindena piston having a passage through 1t, and downwardly opening valves control ling said passage, and discharge valves at i the lower end of the cylinder, said piston on the cylinder. end. 7 a

9. A'va'clium pump having a .vertical cyl- -inder,with its i'nletat'the upper end of the and the bottoln' end of the cylinder being'f provided respectively 1 with correspond g recesses and projections, and a drain passage from the recess between the .pro ectlons cylinder, a piston having a passage through it and downwardly opening- -t alves' contro1-' ling said passage, and discharge valves 'at 1 0' the lower-end of the cylinder, said piston and one end ofthe cylinder being provided with corresponding recesses nd projections, v

-for the reduction of clearance space.

In testimony whereof I have hereunto set my hand. 5 Z.

' PAULDI-snRE s' 

